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<?php
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/**
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* @author Aleksandar Panic
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* @license http://www.apache.org/licenses/LICENSE-2.0
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* @since 1.0.0
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**/
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namespace ArekX\ArrayExpression;
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use ArekX\ArrayExpression\Exceptions\TypeNotMappedException;
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use \ArekX\ArrayExpression\Interfaces\ExpressionParser as ExpressionParserInterface;
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use ArekX\ArrayExpression\Interfaces\Operator;
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/**
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* Class ExpressionParser
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* Expression parser which converts array expressions into Operator instances.
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*
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* @package ArekX\ArrayExpression
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*/
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class ExpressionParser implements ExpressionParserInterface
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{
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/**
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* Type map used to resolve types in arrays.
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* @var array
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*/
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protected $typeMap = [];
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/**
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* @inheritDoc
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*/
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public function setTypeMap(array $typeMap)
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{
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$this->typeMap = $typeMap;
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}
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/**
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* Sets a type resolver.
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*
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* @param string $type Type name
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* @param callable|string $resolver Callable resolver or a class which gets created.
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*/
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public function setType(string $type, $resolver)
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{
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$this->typeMap[$type] = $resolver;
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}
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/**
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* @inheritDoc
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* @throws TypeNotMappedException
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*/
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public function parse(array $expression)
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{
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if (empty($this->typeMap[$expression[0]])) {
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throw new TypeNotMappedException($expression[0]);
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}
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$resolver = $this->typeMap[$expression[0]];
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if (is_callable($resolver)) {
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return $resolver(...$expression);
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}
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/** @var Operator $resolver */
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$resolver = new $resolver();
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$resolver->setParser($this);
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$resolver->configure($expression);
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return $resolver;
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}
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} |
ArekX /
array-expression-engine
